Peelable adhesive composition

Abstract

The invention relates to an adhesive composition comprising at least one latex and at least one polymer composition having a glass transition temperature ranging from −50° C. to 0° C., said adhesive composition being particularly suitable for bonding flexible surface coverings having a high dimensional variability.The invention also relates to a membrane obtained after drying of the adhesive composition according to the invention, a combination of a flexible surface covering with an adhesive composition according to the invention, a method of application of a flexible surface covering onto a substrate as well as a substrate covered with a peelable adhesive membrane according to the invention.

Description

TECHNICAL FIELD[0001]The present invention relates to a peelable adhesive composition. The invention also relates to a peelable membrane obtained by drying the adhesive composition according to the invention. A subject of the invention is also the combination of a surface covering with the peelable adhesive composition, and a method for applying a surface covering. The invention also relates to a method for renovating a surface covering. The invention also relates to the use of the peelable adhesive composition for holding a flexible surface covering having a maximum dimensional variability measured according to the Freudenberg test greater than or equal to 0.2%.STATE OF THE ART[0002]The replacement of a flexible floor covering is an operation which has for a long time posed numerous problems to professionals and individuals.[0003]Solutions for the non-permanent fixing of the covering exist, either by the use of double-sided adhesive tapes or by the use of a fixing agent constituted...

AI Technical Summary

Benefits of technology

[0043]the adhesive composition of the invention makes it possible to bond and hold all types of coverings, in particular coverings having a high dimensional variability, without having to use an additional strong adhesive,

[0044]the composition of the invention makes it possible, after drying, to easily separate the flexible covering from the substrate, while leaving the support and the covering intact with practically no adhesive residue,

[0045]the composition of the invention is an adhesive composition which, after drying, forms a peelable film, also called a membrane. A single composition therefore makes it possible to ensure the bonding and the subsequent unsticking of the covering,

[0046]the adhesive composition of the invention offers long-lasting bonding suited to high-traffic premises,

[0051]the invention allows recycling of the covering, after unsticking and removing (or lifting) the peelable film, the latter being free from adhesive residue.

Problems solved by technology

The replacement of a flexible floor covering is an operation which has for a long time posed numerous problems to professionals and individuals.

In fact the strength of the fixing and the durability of the bonding are low.

Moreover, the use of double-sided adhesive tapes causes excessive thicknesses which can lead to blisters when furniture is moved, or give rise to marks on the PVC (known as “ghosting”).

In the case of a fixing using standard adhesives which is the common solution at present, replacement for renovation of a previously-bonded flexible floor covering (for example a carpet), involves a succession of time-consuming and tedious steps before it is possible to bond a new covering.

Moreover, adhesive and potentially residues of inorganic binder such as levelling agent remain stuck to the old covering, which constitutes an obstacle to its recycling.

In the case of large surface areas such as commercial premises, the replacement of the covering will require closure of the premises for a relatively long time which is necessary for all of the renovation steps.

However, coverings made of rubber are more difficult to bond as they are sensitive to temperature variations and are therefore more deformable.

In fact, when the flexible rubber covering is bonded with an adhesive that is too soft or unsuitable, the adhesive follows the variations in the covering and does not hold it.

Most standard acrylic adhesives do not allow coverings made of rubber to be bonded, as they are too soft and do not have sufficient affinity with rubber.

Furthermore, these adhesives do not allow subsequent removal of the covering without leaving residues either on the floor or on the covering.

At present there is thus no simple, strong solution for bonding and holding all types of flexible floor coverings, in particular floor coverings having a significant dimensional variability, which can be easily and quickly removed subsequently, in order to retrieve on the one hand the original substrate for renovation, and on the other hand the original flexible covering for recycling.

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